Common Core Essential Elements Mathematics

Achievement test. 
An instrument designed to efficiently measure the amount of academic knowledge and/or skill a student has 
acquired from instruction.  Such tests provide information that can be compared to either a norm group or a measure of performance, 
such as a standard. 
Age appropriate. 
The characteristics of the skills taught, the activities and materials selected, and the language level employed that 
reflect the chronological age of the student. 
Alignment. 
The similarity or match between or among content standards, achievement (performance) standards, curriculum, 
instruction, and assessments in terms of equal breadth, depth, and complexity of knowledge and skill expectations.